ansible: retire Minecraft Fossils

The Fabric server holds 8.8 GB of asxpio-services' 15 GB of RAM, more
than everything else on the host together, and the XMPP server moves
here next. Save the world, remove its containers and the daily restart
timer.

The world stays in /opt/minecraft-fossils/data, and in the restic
backups, until it is deleted by hand.

Assisted-by: Claude:opus-5-5

ansible/roles/minecraft_fossils/tasks/main.yaml

@@ -1,49 +1,39 @@
 ---
-# Fabric server plus a sidecar that mirrors the whitelist, ops and ban
-# lists from the Paper server. World data in /opt/minecraft-fossils/data
-# is not managed here. A compose change recreates the container, so it
-# is saved and stopped with time to finish first.
-- name: Deploy Minecraft Fossils
-  ansible.builtin.include_role:
-    name: docker_service
-  vars:
-    service_name: "minecraft-fossils"
-    service_base_path: "{{ services_base_path }}/minecraft-fossils"
-    service_templates:
-      - src: "secrets.env.j2"
-        dest: "secrets.env"
-        owner: "{{ minecraft_fossils_owner }}"
-        group: "{{ minecraft_fossils_owner }}"
-        mode: "0600"
-    service_files:
-      - src: "docker-compose.yml"
-        dest: "docker-compose.yml"
-        owner: "{{ minecraft_fossils_owner }}"
-        group: "{{ minecraft_fossils_owner }}"
-    # secrets.env only matters at container start; never restart the
-    # game server as a side effect of a deploy
-    service_restart_on_change: false
-    service_graceful_stop:
-      - container: minecraft-fossils
-        timeout: 120
-        pre_stop: docker exec minecraft-fossils rcon-cli save-all flush
-    health_check_enabled: false
+# Retired: the Fabric server is stopped for good to free its 8 GB of
+# RAM. The world stays in /opt/minecraft-fossils/data (and in the restic
+# backups) until it is deleted by hand.
+- name: Check for the old deployment
+  ansible.builtin.stat:
+    path: /opt/minecraft-fossils/docker-compose.yml
+  register: fossils_compose
 
-- name: Install the daily restart units
-  ansible.builtin.copy:
-    src: "{{ item }}"
-    dest: "/etc/systemd/system/{{ item }}"
-    mode: "0644"
+- name: Save the world
+  ansible.builtin.command: docker exec minecraft-fossils rcon-cli save-all flush
+  when: fossils_compose.stat.exists
+  register: fossils_save
+  changed_when: fossils_save.rc == 0
+  failed_when: false
+
+- name: Stop and remove the containers (data stays)
+  community.docker.docker_compose_v2:
+    project_src: /opt/minecraft-fossils
+    project_name: minecraft-fossils
+    state: absent
+    timeout: 120
+  when: fossils_compose.stat.exists
+
+- name: Disable the daily restart timer
+  ansible.builtin.systemd:
+    name: minecraft-fossils-restart.timer
+    enabled: false
+    state: stopped
+  failed_when: false
+
+- name: Remove the restart units
+  ansible.builtin.file:
+    path: "/etc/systemd/system/{{ item }}"
+    state: absent
   loop:
     - minecraft-fossils-restart.service
     - minecraft-fossils-restart.timer
   notify: Reload systemd
-
-- name: Flush handlers
-  ansible.builtin.meta: flush_handlers
-
-- name: Enable the daily restart timer
-  ansible.builtin.systemd:
-    name: minecraft-fossils-restart.timer
-    enabled: true
-    state: started